Adult tricycle



FIG. 1 is a perspective view of the adult tricycle showing my decorative design;

FIG. 2 is a right side view;

FIG. 3 is a left side view;

FIG. 4 is a front plan view;

FIG. 5 is a rear plan view;

FIG. 6 is a bottom plan view; and,

FIG. 7 is a top plan view. 

The ornamental design for an adult tricycle, as shown. 